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Mario Limonciello 03b979e102 drm/amd/display: Optimize custom brightness curve
[Why]
When BIOS includes a lot of custom brightness data points, walking
the entire list can be time consuming.  This is most noticed when
dragging a power slider.  The "higher" values are "slower" to drag
around.

[How]
Move custom brightness calculation loop into a static function. Before
starting the loop check the "half way" data point to see how it compares
to the input.  If greater than the half way data point use that as the
starting point instead.

Reviewed-by: Alex Hung <alex.hung@amd.com>
Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
Signed-off-by: Roman Li <roman.li@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
History 2025-04-07 18:01:07 -04:00
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Linux kernel
============

There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.  The formatted documentation can also be read online at:

    https://www.kernel.org/doc/html/latest/

There are various text files in the Documentation/ subdirectory,
several of them using the reStructuredText markup notation.

Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.